package cn.tedu.v6;

import java.io.*;
import java.net.ConnectException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;


public class Client {
    private Socket socket;
    private static final String HOST="127.0.0.1";
    private static final Integer PORT=4545;
    private BufferedReader br;
    private PrintWriter pw;
    private Scanner scanner;

    public Client() {
        try {
            socket=new Socket(HOST,PORT);

            br=new BufferedReader(new InputStreamReader(socket.getInputStream(),"UTF8"));

            pw=new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(),"UTF8")),true);

        } catch (NullPointerException e){
            System.out.println("友情提示：IP传入错误导致链接失败~");
        }catch (UnknownHostException e){
            System.out.println("友情提示：IP传入错误");
        }catch (ConnectException e){
            System.out.println("客户端连接失败：建议检查IP或者端口号");
        }catch (IOException e) {
            System.out.println("客户端链接服务器失败，提示：检查IP/端口号");
        }
    }

    public void start() {
        System.out.println("~~~~欢迎使用？？牌聊天室~~~~");
        Scanner input=new Scanner(System.in);

        try {
            String serverMessage=br.readLine();

            System.out.println(serverMessage);

            String username=input.nextLine();

            pw.println(username);

            serverMessage=br.readLine();
            System.out.println(serverMessage);

            String password=input.nextLine();
            pw.println(password);


            serverMessage=br.readLine();

            System.out.println(serverMessage);
            if(serverMessage.startsWith("登录成功")){
                chat();
            }

        }catch (IOException e){
            System.out.println("客户端断开链接");
        }finally {
            if(br!=null)
                try {
                    br.close();
                } catch (IOException e) {
                    System.out.println("通讯关闭失败~~");
                }

            if(pw!=null)
                pw.close();

            if(socket!=null&&!socket.isClosed()){
                try {
                    socket.close();
                } catch (IOException e) {
                    System.out.println("通讯关闭失败~");
                }
            }
        }

    }

    private void chat(){
        new Thread(()->{
            try {
                String message;

                while((message=br.readLine())!=null){
                    System.out.println("服务器端说："+message);
                    System.out.println("客户端请输入：");
                }

            } catch (IOException e) {
                System.out.println("服务器端读入失败");
            }
        }).start();

        Scanner input=new Scanner(System.in);

        while(true){
            System.out.println("客户端请输入：");
            String say=input.nextLine();
            pw.println("客户端说："+say);
        }

    }

    public static void main(String[] args){
        new Client().start();
    }

}

































